This book gives a general understanding of the very idea of State of Nature and Social Contract Philosophy. The notion of State of Nature as it has been viewed by different Contract Philosophers is the background of this book. Keeping the background of the apolitical notion, it proceeds to understand the political notion e.g. Social Contract Philosophy in Rousseau's writings. The theory of General Will as it is the heart of Contract Philosophy has been discussed implicitly. However, the primary aim of this book is to review Rousseau's Contract philosophy from two influential thinkers point of view namely Emile Durkheim and Jhon Charvet.